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Worksheets

Function & Relation Mastery

Total questions: 23

Worksheet time: 30mins

Name
Class
Date
1.

Evaluate the function f(x) = 2x - 3 at x = 5.

a)

7

b)

8

c)

10

d)

12

2.

Determine the domain of the function g(x) = sqrt(x + 1).

a)

x >= -1

b)

x = 0

c)

x > -1

d)

x < -1

3.

Perform the operation (f + g)(x) where f(x) = x^2 and g(x) = 2x.

a)

x^2 + x

b)

x^2 + 2x

c)

x^2 - 2x

d)

2x^2

4.

Identify where the function k(x) = 1/x is undefined.

a)

k(x) is undefined when x = 0.

b)

k(x) is undefined when x = 2

c)

k(x) is undefined when x = -1

d)

k(x) is undefined when x = 1

5.

Calculate f(3) for the function f(x) = 4x^2 - 5x + 1.

a)

22

b)

10

c)

15

d)

30

6.

What is the domain of the function p(x) = 2x + 1?

a)

(-∞, +∞)

b)

[0, +∞)

c)

(-∞, 0]

d)

[1, +∞)

7.

Find (g - h)(x) for g(x) = 3x and h(x) = x^2.

a)

3x + x^2

b)

3x * x^2

c)

3x / x^2

d)

3x - x^2

8.

Where is the function r(x) = sqrt(x - 2) undefined?

a)

x < 0

b)

x < 2

c)

x > 2

d)

x = 2

9.

Evaluate the function s(x) = 2x^3 - 5x^2 + 3 at x = -2.

a)

-25

b)

-33

c)

-10

d)

-18

10.

What is the domain of the function t(x) = sqrt(4x - 1)?

a)

x > 1/4

b)

x = 1/4

c)

x <= 1/4

d)

x >= 1/4

11.

Determine the range of the function u(x) = 2x^2 - 4x + 1.

a)

(-∞, -1)

b)

(-1, ∞)

c)

(0, ∞)

d)

(-1, 1)

12.

Calculate (p + q)(x) for p(x) = x^2 and q(x) = 3x.

a)

4x^2 + 3x

b)

x^3 + 3x^2

c)

3x^3 + x^2

d)

3x^2 + x^3

13.

Identify where the function v(x) = 1/(x - 3) is undefined.

a)

x = -3

b)

x = 0

c)

x = 1

d)

x = 3

14.

Find f(-1) for the function f(x) = x^3 - 2x^2 + x - 1.

a)

-3

b)

0

c)

2

d)

-5

15.

6 - 2 • 2 + 2⁵

a)

40

b)

34

c)

18

d)

12

16.

What values of x will make the expression undefined X/x² + x - 6?

a)

6

b)

-2

c)

-2 and 3

d)

2 and -3

17.

(x²y -3y² + 5xy²) - (-x²y + 3xy² - 3y²)

a)

4x²y²

b)

8xy² - 6y²

c)

2x²y + 2xy²

d)

2x²y + 8xy² - 6y²

18.

Solve x: 3(x + 1) = -6

a)

-2

b)

-3

c)

1

d)

7/3

19.

Evaluate: 3x - y/6z -x if x = 2, y = 8, z = -2

a)

1/7

b)

-1/7

c)

1/5

d)

-1/5

20.

Simplify: 2a +3b + 5a - 7b

a)

7a - 4b

b)

7a + 4b

c)

3ab

d)

7a - 10b

21.

Expand: (2x - 3)²

a)

4x² - 9

b)

4x² + 9

c)

2x² -12x + 9

d)

4x² - 12x + 9

22.
Is the relation a function?
a)
Function
b)
Not a Function
23.
Is relation shown a function?
a)
YES
b)
NO